\ifthenelse{\equal{\PrintFilePath}{true}}{
    \usepackage{currfile}
    \usepackage{background}
    \backgroundsetup{
        color=gray,
        position=current page.west,
        angle=90,
        nodeanchor=west,
        vshift=-5mm,
        hshift=-20mm,
        opacity=1,
        scale=1.75,
        contents={\texttt{\currfilepath{}}}
    }
}
{}